Nice review, I agree with the bad and good points you’ve put out, but I’m really not sure how you mention ‘distortion’ as a positive point and that you say you almost can’t see it. And I’m not talking about the ‘blurry ring’ at the edges, I’m talking about geometric deformations (stretching) of the ‘world’ when objects get nearer to the edges. It’s the most easy to notice when you look at a vertical long object, like a tree for example, and keep looking at it while you move your head from left to right. The top of the tree will bend when it nears the edges. I find this actually so disturbing that for me this is the worst part of the 5k+ (the 8k should have the exact same problem). Of course, everybody is different, but to me this effect is so obvious that I’m not really sure how one could miss it. Whenever I put my Vive Pro back on I feel totally different, like I’m really in that virtual world (just wearing goggles, LOL). But with the Pimax 5k+ I feel much more like watching into another world, because of this effect. Then again, maybe I’m just more sensitive to it than you, or maybe it’s because our faces/eyes are different, could maybe also be a factor. But for me this is the nr 1 problem with the HMD. I’m hoping Pimax can fix it.

Well, as I said, there is distortion but it’s just nothing, only on the very far edges, that’s why it is a good point to me since I barely can see there, plus biggest part of distortion is not stretching one but blurry one, which can’t be seen at all with peripheral view, like I said in the InDeath video when reading fpsVR window.
Maybe some games are worse than others with large FoV.
Just like some require freaking parallel projections that ruins fps and clarity, yes clarity, image ratio is joke than kill performance and supersampling is lost.

Well, that is, we conclude that these geometric distortions (a curved tree at the edge) are equally present in 5K + and 8K.
OK thanks.
(I thought to make another breakthrough towards 8K, but it did not work out …)

I’m sure that’s true. BTW it’s not a ‘deal breaker’ to me, but it is issue nr 1 for me that I’d like to see fixed. But yeah, we’re all different, not only in the way we perceive things but I also suspect that the 3d positions of your eyes relative to the panels (so depending your face) could be a factor.

Definately true, I bought a Samsung Odyssey as I had read how good they were and it is completely useless for me as due to my head/face shape the closest I can get to my face there is a gap all round the side. This means that the Odyssey + is a very dodgy buy for me.